Since Craigs mother dismissed him from the sanctury that he put so much effort as well as his incredible talent, into creating, he is forbidden to enter the enclosures with the cats, and is rarely allowed to even visit them, despite living on site.
Dalu Mncube entered an enclosure at Zion Park without supervision from Craig (as by this point his mother had dismissed him from the park that he created!) and was mauled to death by a large male Royal White Bengal Tiger named Abu. Abu was then shot.